Forms 37° flares in annealed stainless steel (MIL-T-6345 or AMS5566), cold drawn stainless steel, copper, aluminum, brass, and other soft metals. Ball thrust bearing mechanism reduces the effort required to produce perfect 37° flares, even in stainless steel. Made of hardened tool steel, and features a non-slip grip which securely holds tubing, even after repetitive flaring. Extension on bar can be clamped in a vise for extra support. Flares tube sizes: 1/8", 3/16", 1/4", 5/16", 3/8", & 1/2" O.D. tubing. Meets AS4330 (formally MS33584) aviation tube flaring standards. 4 lbs (2Kg) shipping weight.